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Ksenya-84 [330]

3 years ago

6

Earth contains water and oxygen molecules. Each mass is given below. Which has the greater mass? Explain how you know.

2 answers:

Licemer1 [7]3 years ago

8 0

Answer:

Sample Response: The water molecule has the greater mass because 2.99 is greater than 2.66. After comparing the exponents, which are the same, the coefficients are compared to determine the molecule with the greater mass.

Bess [88]3 years ago

5 0

Answer:

The water molecule has the greater mass because 2.99 is greater than 2.66. After comparing the exponents, which are the same, the coefficients are compared to determine the molecule with the greater mass.

Step-by-step explanation:

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If 2x + 5 = 8x, then 12x = ?A.5B.10C.15D.20

butalik [34]

<h2>Answer:</h2> $10.\text{ Option B is correct}$

<h2>Explanation:</h2>

Given the equation expressed as:

$2x+5=8x$

First, we need to calculate the value of "x" from the given expression.

Step 1: Given the equation 2x + 5 = 8x

Step 2: Subtract 5 from both sides:

$\begin{gathered} 2x+5-5=8x-5 \\ 2x+\cancel{5}-\cancel{5}=8x-5 \\ 2x=8x-5 \end{gathered}$

Step 3: Subtract 8x from both sides

$\begin{gathered} 2x-8x=8x-8x-5 \\ -6x=\cancel{8x}-\cancel{8x}-5 \\ -6x=-5 \end{gathered}$

Step 4: Divide both sides by -6

$\begin{gathered} \frac{-6x}{-6}=\frac{-5}{-6} \\ x=\frac{5}{6} \end{gathered}$

Step 5: Get the value of 12x. Substitute x = 5/6 into the expression to have:

$\begin{gathered} 12x=12(\frac{5}{6}) \\ 12x=\cancel{12}^2(\frac{5}{\cancel{6}^1}) \\ 12x=2\times5 \\ 12x=10 \end{gathered}$

Therefore the value of 12x is 10

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Step-by-step explanation: Please see the attachments below for the complete question as well as the Step-by-step explanation

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